MCQOPTIONS
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MCQOPTIONS
This section includes 2171 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1201. |
A progressive limit gauge has |
| A. | 'Go' and 'Not go' member on the same side of the gauge |
| B. | separate 'Go' and 'Not go' members |
| C. | 'Go' member at one end and 'Not go' member at the other end |
| D. | none of the above |
| Answer» B. separate 'Go' and 'Not go' members | |
| 1202. |
The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded) |
| A. | t |
| B. | 1.5 t |
| C. | 3 t |
| D. | 6 t |
| Answer» E. | |
| 1203. |
The dowels are |
| A. | wooden nails |
| B. | box nails |
| C. | wire nails |
| D. | none of these |
| Answer» B. box nails | |
| 1204. |
The cold chisels are made from |
| A. | cast iron |
| B. | mild steel |
| C. | high speed steel |
| D. | cast tool steel |
| Answer» E. | |
| 1205. |
A file with 20 teeth in 25 mm is called |
| A. | rough file |
| B. | bastard file |
| C. | second cut file |
| D. | smooth file |
| Answer» B. bastard file | |
| 1206. |
In a cold chamber die casting machine, only non-ferrous alloys with __________ are casted. |
| A. | low melting temperature |
| B. | high melting temperature |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 1207. |
During drawing operation, the states of stress in cup would include |
| A. | compressive stress in the flange |
| B. | tensile stress in the wall |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» D. none of these | |
| 1208. |
When a pattern is made in three parts, the top part, is known as a |
| A. | drag |
| B. | cheek |
| C. | cope |
| D. | none of these |
| Answer» D. none of these | |
| 1209. |
The shrinkage allowance for cast iron pattern is |
| A. | 10 mm/m |
| B. | 16 mm/m |
| C. | 20 mm/m |
| D. | 26 mm/m |
| Answer» B. 16 mm/m | |
| 1210. |
For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately |
| A. | 42 mm |
| B. | 44 mm |
| C. | 46 mm |
| D. | 48 mm |
| Answer» D. 48 mm | |
| 1211. |
In welding aluminium with TIG arc welding, alternating current is used. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» B. Incorrect | |
| 1212. |
The metal extrusion process is generally used for producing |
| A. | uniform solid sections |
| B. | uniform hollow sections |
| C. | uniform solid and hollow sections |
| D. | varying solid and hollow sections |
| Answer» D. varying solid and hollow sections | |
| 1213. |
In a __________ , the molten metal is poured and allowed to solidify while the mould is revolving. |
| A. | die casting method |
| B. | slush casting method |
| C. | permanent mould casting method |
| D. | centrifugal casting method |
| Answer» E. | |
| 1214. |
The electron beam welding can be carried out in |
| A. | open air |
| B. | a shielded gas environment |
| C. | vacuum |
| D. | a pressurised inert gas chamber |
| Answer» D. a pressurised inert gas chamber | |
| 1215. |
The adhesiveness is the property of a sand due to which |
| A. | it evolves a great amount of steam and other gases |
| B. | the sand grains stick together |
| C. | it cling to the sides of a moulding box |
| D. | none of these |
| Answer» D. none of these | |
| 1216. |
Shift is a casting defect which |
| A. | results in a mismatching of the top and bottom parts of a casting |
| B. | results in general enlargement of a casting |
| C. | occurs near the ingates as rough lumps on the surface of a casting |
| D. | occurs as sand patches on the upper surface of a casting |
| Answer» B. results in general enlargement of a casting | |
| 1217. |
The maximum flame temperature occurs |
| A. | at the outer cone |
| B. | at the inner cone |
| C. | between the outer and inner cone |
| D. | at the torch tip |
| Answer» C. between the outer and inner cone | |
| 1218. |
The mode of deformation of the metal during spinning is |
| A. | bending |
| B. | stretching |
| C. | rolling and stretching |
| D. | bending and stretching |
| Answer» E. | |
| 1219. |
The upsetting is a process of |
| A. | increasing the cross-section of a bar |
| B. | reducing the cross-section of a bar |
| C. | joining the two surfaces of metal under pressure after heating |
| D. | bending of a bar |
| Answer» B. reducing the cross-section of a bar | |
| 1220. |
The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is |
| A. | less than 0.1 percent |
| B. | less than 0.3 percent |
| C. | more than 0.3 percent |
| D. | any where between 0.1 to 1 percent |
| Answer» D. any where between 0.1 to 1 percent | |
| 1221. |
The metal is subjected to mechanical working for |
| A. | refining grain size |
| B. | reducing original block into desired shape |
| C. | controlling the direction of flow lines |
| D. | all of these |
| Answer» E. | |
| 1222. |
In fore-hand welding, the angle between the welding torch and the work is __________ as compared to back-hand welding. |
| A. | same |
| B. | less |
| C. | more |
| D. | None of these |
| Answer» C. more | |
| 1223. |
Extrusion |
| A. | is extensively used for making bolts and nuts |
| B. | is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work |
| C. | is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface |
| D. | consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part |
| Answer» E. | |
| 1224. |
The drawing down is a process of __________ the cross-section of a bar. |
| A. | increasing |
| B. | reducing |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 1225. |
The acetylene cylinder is usually painted with |
| A. | black colour |
| B. | white colour |
| C. | maroon colour |
| D. | yellow colour |
| Answer» D. yellow colour | |
| 1226. |
Fin is a casting defect which is due to thin projections of metal not intended as a part of casting. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» B. Incorrect | |
| 1227. |
Metal patterns require __________ draft allowance than wooden patterns. |
| A. | more |
| B. | less |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 1228. |
For gas welding, the presure desired at the welding torch for acetylene is |
| A. | 7 to 103 kN/m² |
| B. | 70 to 280 kN/m² |
| C. | 280 to 560 kN/m² |
| D. | 560 to 840 kN/m² |
| Answer» B. 70 to 280 kN/m² | |
| 1229. |
When the dimension is expressed as , then the tolerance is |
| A. | 0.035 mm |
| B. | 0.025 mm |
| C. | 0.01 mm |
| D. | 0.06 mm |
| Answer» E. | |
| 1230. |
Thermit welding is often used in |
| A. | replacing broken gear teeth |
| B. | repairing broken shears |
| C. | joining rails, truck frames and locomotive frames etc. |
| D. | all of the above |
| Answer» E. | |
| 1231. |
A pattern is used to make the mould cavity for pouring the molten metal for casting. |
| A. | Yes |
| B. | No |
| C. | Can't say |
| D. | None of these |
| Answer» B. No | |
| 1232. |
In a simple die |
| A. | two or more operations are performed simultaneously at the single stroke of the ram |
| B. | two or more cutting operations are performed at one station of the press in every stroke of the ram |
| C. | both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram |
| D. | none of the above |
| Answer» E. | |
| 1233. |
In back-hand welding, the angle between the welding rod and the work is __________ as compared to fore-hand welding. |
| A. | same |
| B. | less |
| C. | more |
| D. | None of these |
| Answer» B. less | |
| 1234. |
A jolt machine is used to |
| A. | ram the sand harder at the pattern face with decreasing hardness towards the back of the mould |
| B. | ram the sand harder at the back of the mould and softer on the pattern face |
| C. | produce uniform sand hardness throughout the mould |
| D. | produce uniform packing of sand in the mould |
| Answer» B. ram the sand harder at the back of the mould and softer on the pattern face | |
| 1235. |
The directional solidification in casting can be improved by using |
| A. | chills and chaplets |
| B. | chills and padding |
| C. | chaplets and padding |
| D. | chills, chaplets and padding |
| Answer» C. chaplets and padding | |
| 1236. |
The minimum size of a billet is 10 cm x 10 cm. |
| A. | Agree |
| B. | Disagree |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 1237. |
During hot working of metals |
| A. | poor surface finish is produced |
| B. | scale is formed on the metal surface |
| C. | close tolerances can not be maintained |
| D. | all of these |
| Answer» E. | |
| 1238. |
If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be |
| A. | 10 mm/m |
| B. | 16 mm/m |
| C. | 20 mm/m |
| D. | 26 mm/m |
| Answer» E. | |
| 1239. |
The welding set up is said to have reversed polarity when the work is connected to the negative terminal and the electrode holder to the positive terminal. |
| A. | Agree |
| B. | Disagree |
| C. | Can't say |
| D. | None of these |
| Answer» B. Disagree | |
| 1240. |
In TIG arc welding, the welding zone is shielded by an atmosphere of |
| A. | helium gas |
| B. | argon gas |
| C. | either (a) or (b) |
| D. | none of these |
| Answer» D. none of these | |
| 1241. |
Rotary swaging |
| A. | is extensively used for making bolts and rivets |
| B. | is used for reducing the diameters of round bars and tubes by rotating dies which open and close rapidly on the work |
| C. | is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface |
| D. | consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part |
| Answer» C. is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface | |
| 1242. |
In electric resistance welding, voltage required for heating is |
| A. | 1 to 5 volts |
| B. | 6 to 10 volts |
| C. | 11 to 20 volts |
| D. | 50 to 100 volts |
| Answer» C. 11 to 20 volts | |
| 1243. |
Cores are used to |
| A. | form internal cavities in the casting |
| B. | improve mould surface |
| C. | form a part of a green sand mould |
| D. | all of these |
| Answer» E. | |
| 1244. |
The operation of bending a sheet of metal along a curved axis, is known as |
| A. | plunging |
| B. | notching |
| C. | slitting |
| D. | forming |
| Answer» E. | |
| 1245. |
A file removes the metal during |
| A. | forward stroke |
| B. | return stroke |
| C. | both forward and return strokes |
| D. | none of these |
| Answer» B. return stroke | |
| 1246. |
The most preferred process for casting gas turbine blades is |
| A. | die casting |
| B. | shell moulding |
| C. | investment moulding |
| D. | sand casting |
| Answer» C. investment moulding | |
| 1247. |
To prevent the body of the blade from jamming in the saw cut, the teeth of blade are |
| A. | strengthened |
| B. | sharpened |
| C. | set |
| D. | all of these |
| Answer» D. all of these | |
| 1248. |
The parts of circular cross-section which are symmetrical about the axis of rotation are made by |
| A. | hot forging |
| B. | hot spinning |
| C. | hot extrusion |
| D. | hot drawing |
| Answer» C. hot extrusion | |
| 1249. |
The temperature produced by oxy-hydrogen flame is about |
| A. | 1800° C |
| B. | 2100° C |
| C. | 2400° C |
| D. | 3200° C |
| Answer» D. 3200° C | |
| 1250. |
The binder commonly used in making oil sand, is |
| A. | clay-type binder |
| B. | organic-type binder |
| C. | inorganic-type binder |
| D. | any one of these |
| Answer» C. inorganic-type binder | |